Generate sitemap.xml, robots.txt

4 files changed, 34 insertions, 1 deletions

diff --git a/src/config.ts b/src/config.ts
index 75ba2dd..c9f5ba0 100644
--- a/src/config.ts
+++ b/src/config.ts
@@ -1,4 +1,4 @@
-import { getTimestamp } from "./util/timestamp";
+import { formatDate, getTimestamp } from "./util/timestamp";
 import BuildInfo from "../config.json";
 
 // eslint-disable-next-line @typescript-eslint/no-explicit-any
@@ -9,10 +9,14 @@ export default function (eleventyConfig: any) {
   });
 
   // hook in configured build time for GH action to update
+  eleventyConfig.addGlobalData("site", () => BuildInfo);
   eleventyConfig.addGlobalData("buildTimeEncoded", () => {
     return getTimestamp(Number(BuildInfo.version));
   });
 
+  // add `date` filter
+  eleventyConfig.addFilter("formatDate", formatDate);
+
   // ensure eleventy marks this config as watched, since it's typescript
   eleventyConfig.addWatchTarget("./src/config.ts");
 
diff --git a/src/pages/robots.njk b/src/pages/robots.njk
new file mode 100644
index 0000000..efb8b84
--- /dev/null
+++ b/src/pages/robots.njk
@@ -0,0 +1,7 @@
+---
+eleventyExcludeFromCollections: true
+permalink: /robots.txt
+---
+User-agent: *
+Allow: /
+Sitemap: {{ site.url }}/sitemap.xml
\ No newline at end of file
diff --git a/src/pages/sitemap.njk b/src/pages/sitemap.njk
new file mode 100644
index 0000000..455c26b
--- /dev/null
+++ b/src/pages/sitemap.njk
@@ -0,0 +1,15 @@
+---
+eleventyExcludeFromCollections: true
+permalink: /sitemap.xml
+---
+<?xml version="1.0" encoding="UTF-8"?>
+<urlset xmlns="http://www.sitemaps.org/schemas/sitemap/0.9">
+{% for item in collections.all %}
+  <url>
+    <loc>{{ site.url }}{{ item.url }}</loc>
+    <lastmod>{{ item.date | formatDate }}</lastmod>
+    <changefreq>{{ item.data.sitemapChangefreq | default("monthly") }}</changefreq>
+    <priority>{{ item.data.sitemapPriority | default(0.8) }}</priority>
+  </url>
+{% endfor %}
+</urlset>
\ No newline at end of file
diff --git a/src/util/timestamp.ts b/src/util/timestamp.ts
index 01b78fb..39683cc 100644
--- a/src/util/timestamp.ts
+++ b/src/util/timestamp.ts
@@ -63,3 +63,10 @@ export function getTimestamp(seconds: number): string {
 
   return dateArr.map(encodeBase62).join(".") + "-0";
 }
+
+/**
+ * Returns a date in the ISO-8601 format
+ */
+export function formatDate(date: Date): string {
+  return date.getUTCFullYear() + "-" + (date.getUTCMonth() + 1) + "-" + date.getUTCDate();
+}